Ander mcguire



(No Model.)

B. L. TEED. ELEVATOR OPERATING MECHANISM.

No. 440.412. I Patented Nov. 11, 1890.

lEzvezzZZi z NITE RALPH L. TEED, OF CHICAGO, ILLINOIS, ASSIGNOR OFONE-HALF TO ALEX- ANDER MCGUIRE, OF SAME PLACE.

ELEVATOR-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 440,412, dated November11, 1890.

Application filed March 29; 1888- Serial No. 268,862- (No model.)

To all whom may concern.-

Be-it known that I, RALPH L. TEED, a citizen of the United States, andresiding at Ohicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Valve-O peratin gMechanism for Elevators, which is fully set forth in the followingspecification, reference being had to the accompanying drawings, inwhich Figure 1 is a side elevation of an apparatus embodying myinvention; Fig. 2, a front elevation of the same; Fig. 3, a detailelevation of the hand-lever, and Fig. 4: a detail view of a portion ofone of the draft-rods and its :5 spring detached. Figs. 1 and 2 are onthe same scale, while Figs. 3 and at are on an enlarged scale.

Like letters refer to like parts in all the figures of the drawings.

My invention relates to valve-operating mechanism for elevators, and hasfor its object to provide an efficient means whereby the Valve whichcontrols the hoisting mechanism of the elevator, which valve is perma- 25 nently located at a point at or near the bottom of the elevator wellor shaft, may be readily and efficiently operated from the movingelevator-car.

My invention has more particularly for its 0 object to provide such amechanism whereby the movement of a hand-lever within the car will becommunicated to an equal extent to the valve, thereby obviating thenecessity of moving the said lever a comparatively great 3 5 distance inorder to produce only aslight motion of the valve.

To these ends my invention consists in certain novel features, which Iwill now proceed to describe, and will then particularly point 0 out inthe claims.

In the drawings, A represents the elevatorcar, which is raised andlowered by means of a suitable cable A, operated by means of anysuitable hoisting mechanism.

5 B represents the valve which controls this hoisting mechanism. Thisvalve is preferably a rotary valve-such as is set forth in LettersPatent No. 37 9,617, granted to me March 20, 1888-a1though the saidvalve may be of any suitable construction. This valve is provided withan arm or leverB' by means of which it is operated.

C represents a fixed standard mounted adjacent to the valve B at or nearthe bottom of the elevator-shaft. In this standard there is mounted ashaft D, provided with acrankarm D, which is connected to the valve-armB by means of a connecting rod or link D The arms B and D are preferablyslotted, as shown in Fig. 1, so that the connecting 6o rod or link D maybe adjustably connected to the said arms, in order to properly regulatetheir movement relatively to each other. On the shaft D there is mounteda gearwheel or pinion d, and on each side of said pinion there ismounted a rack E, meshing therewith and capable of vertical movementthrough suitable guides c on the standard 0. The racks E are eachprovided at their upper ends with a pulley-wheel e.

F represents a cable, the ends of which are attached to the car A in anysuitable manner. Starting from one of its points of attachment to thecar, the cable passes upward over a fixed pulley f at the top of theelevator-shat't, and then downward around one of the pulleys e, whenceit is carried upward and passes around a wheel G, mounted on the car A,being preferably secured to the said wheel by means of a suitablefastening 8o device g. From the wheel G the cable F passes downwardaround the other pulley e, and is then carried upward over a secondpulley f, mounted at the top of the elevatorshaft, from which latterpulley it extends 8 5 downward and is attached to the car A at its otherend.

H represents a sleeve attached to the car A and forming a bearing for ashaft H, which extends through said sleeve andhas mounted on its outerend the wheel G. On the inner end of the shaft 11' there is mountedahandlever 11 provided with a'spring-locking bolt h of ordinaryconstruction.

h represents an arc-bar provided with 5 notches h three in number andcorresponding to the three positions which the valves B assumes in orderto stop the car or move the same either upward or downward. Thelocking-bolt h by its engagement with the said notches locks thehand-leverH in these three positions.

The ends of the cable F are preferably connected to the car A by ayielding or spring connection, in order to obviate any jar to thevalve-operating mechanism by reason of the sudden starting or stoppingof the car. To effect this connection, I prefer the devices shown in thedrawings, in which each end of the cable is connected to a draft-rod I,which passes loosely downward through a suitable guide a near the top ofthe car A, and also extends loosely through the bottom or fiooring ofthe car, being provided at its lower end with a nut t to limit theupward motion of the rod.

1 represents a collar adjustably mounted in the draft-rod I, beingsecured thereon after adjustment by a set-screw 'i'.

I represents a spring coiled around the draft-rod 1, its upper endabutting against the guide a, while its lower end abuts against thecollar 1'. These springs I serve to thrust the draft-rod I normallydownward and keep the cable F taut, while at the same time they serve totake up the strain of a sudden stopping or starting of the car, in whichcase it might be possible that aportion of the weight of the car wouldbe transt erred to the cable F.

The collars I may be made of a sufficient size to act as weights, inwhich case the springs I may be dispensed with.

The operation of the mechanism is as follows: In the position of theparts shown in the drawings the car is stationary, with the lever H in acentral position. In case it is desired to start the car in eitherdirection the lever H is thrown over in the proper direction until itslocking-bolt it engages with the notch 712 of the arc-bar H. Thismovement of the leverimparts a movement of rotation to the Wheel G, andthereby, through the medium of the cable F, exerts an upward pull uponone of the racks E by reason of the said cable passing around thepulleye thereof. The said rack E is therefore moved upward, while at thesame time the rack on the other side of the pinion d is moved downwardto a corresponding extent, the wheel Gpayin g out slack to allowthisdescent to the other rack. This movement of the racks E imparts amovement of rotation to the pinion d, and consequently to the shaft D,the arm D of which, by means of the link D moves the arm B of the valveB to a corresponding extent. The valve B is thus moved into the properposition to impart to the car A the desired 'motion either in an upwardor a downward direction. During the travel of the car the cable F runsfreely over the pulleys e and f, Whatever the position of the pulleys eand that of the wheel G may be. To arrest the movement of the car, it isonly necessary to bring the lever H back in the position shown in thedrawings, when the other parts of the mechanism will be brought backinto the position shown and the car will stop. By moving the lever H inthe opposite direction the valve B may be turned so as to move the car Ain a corresponding direction. It will be observed that the parts may beso proportioned as to produce any desired extent of movement of thevalve B in proportion to the movement of the leverH within the car, and,owing to this fact, the action of the valve-operating mechanism isextremely quick and positive, since the action of the valve correspondsexactly in time and extent to the motion of the lever H I am aware ofLetters Patent No. 334,907, granted January 26, 1886, to R. O. Smith,and I do not wish to be understood as claiming anything therein setforth.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with the valve, of a shaft arranged adjacent theretoand connected to the valve to operate the same, a pinion on said shaft,sliding racks arranged on opposite sides of said pinion and providedwith pulleys, the car provided with a wheel, fixed pulleys at the top ofthe elevator-shaft, and a cable having its ends connected to the car andpassing over the pulleys at the top of the shaft, around the pulleys onthe racks,

and around the wheel on the car, substantially as and for the purposesspecified.

2. The combination, with the valve B, having arm B, of the shaft D,having arm D, the

link D connecting said arms, the pinion cl on said shaft, the slidingracks E, meshing with opposite sides of said pinion and provided withpulleys e, fixed pulleysf, the car A, provided with shaft H, havingwheel G and handlever H and the cable F, having its ends connected tothe car and passing around the pulleys c and f and wheel G,substantially as and for the purposes specified.

3. The combinatiomwith the valve B, having slotted arm B, of the shaftD, having slotted arm D, the link D adjustably connecting said arm withslot-ted arm B, the pinion d, racks E, and asuitable cable connected tothe car for operating said racks in opposite directions, substantiallyas and for the purposes specified.

RALPH L. TEED.

Witnesses:

IRVINE MILLER, CARRIE FEIGEL.

IIO

